Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
2
9
2011
09
01
SUSCEPTIBILITY OF SOME EGYPTIAN WHEAT VARIETIES TO THE INFESTATION WITH THE GRANARY WEEVIL, Sitophilus granarius (L). (COLEOPTERA: CURCULIONIDAE).
773
781
EN
M.
A.
Mahmoud
Plant Protection Dept., Fac. Agric., Al-Azhar Univ., Egypt
Y.
A.
Darwish
Plant Protection Dept., Fac. Agric., Assiut University, Egypt
Y.
M.
Omar
Plant Protection Dept., Fac. Agric., Assiut University, Egypt
youssf@yahoo.com
R.
E.
Hassan
Plant Protection Dept., Fac. Agric., Al-Azhar Univ., Egypt
10.21608/jppp.2011.86524
<span>The present investigation was carried out to evaluate the relative susceptibility of ten Egyptian wheat varieties to the infestation with the granary weevil, <em>Sitophilus granarius</em> (L). The loss in grain weight and the percentage of infested grains were determined in choice and force infestation tests. The obtained results, either in the choice or non-choice infestation tests, indicated that non of the tested varieties were completely resistant against the attack by the insect pest; but their susceptibility to the infestation varied considerably. Variety Gemmiza 7 was the most susceptible with an average infestation level of 18.33% and a maximum weight loss of 6.41 g/100 g grains. Oppositely, variety Beny-sewif 4 was the least susceptible with an infestation level of 3.00% and minimum weight loss of 1.64 g/100 gm. A significant positive correlation was found between the infestation of grains and weight loss (r= 0.86-0. 95<sup>**</sup>). </span>
Stored grain pests,Wheat varieties,Sitophilus granarius,susceptibility
https://jppp.journals.ekb.eg/article_86524.html
https://jppp.journals.ekb.eg/article_86524_7cefa8ec5db36c015415a3778c71f143.pdf
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
2
9
2011
09
01
FIELD EVALUATION OF DIFFERENT MANUAL INJECTION METHODS FOR CONTROLLING RED PALM WEEVIL, Rhynchophorus ferrugineus (OLIVIER) COMPARED WITH A MECHANICAL DEVISE
783
789
EN
A.
A.
Abd-El-Hady
Faculty of Agric. Mansoura University, Mansoura, Egypt.
Laila
R.
El Gohary
Faculty of Agric. Mansoura University, Mansoura, Egypt.
F.
M.
Abd-El-Hady
Plant Protection Research Institute, Agric. Res. Center Giza - Egypt.
10.21608/jppp.2011.86525
Field experiments were carried out to evaluate the efficiency of five manual trunk injection methods for controlling red palm weevil, Rhynchophorus ferrugienus (Olivier). Fifteen date palms with different status of infestation (5 limited, 5 moderated and 5 severe) for each method was injected by Chloropyrifos 48% EC at rate of 0.3%.
One of the most effective manual injection methods was compared with a mechanical device using Phenothoate 50% EC solution at the rate of 0.3%. Data showed that, the manual method was more successful than mechanical device. The manual method caused 100% recovery in the lowest level of infestation only, while it caused 80% recovery at the other two levels of infestation.
https://jppp.journals.ekb.eg/article_86525.html
https://jppp.journals.ekb.eg/article_86525_2a0c3937764e3fd29664bb11fbca4183.pdf